High Sierra includes the brand new Apple File System for Macs (APFS) with SSDs, significant updates to the Photos app’s interface and editing tools, Safari11, iCloud file sharing, various under-the-hood architecture improvements and more.

macOS High Sierra:Your Mac. Elevated. New technologies at the heart of the system make your Mac more reliable, capable and responsive — and lay the foundation for future innovations. macOS High Sierra also refines the features and apps you use every day. It’s macOS at its highest level yet. Read on for a walkthrough of what’s new in macOS 10.13 …